A master alloy is a base metal like aluminium, magnesium, nickel, or copper combined with a comparatively high percentage of one or two other elements. It’s manufactured to be used as raw materials by the metals industry, and that’s why we called master alloy or based alloy semi-finished products. Master alloys are produced in various shapes such as ingot, waffle plates, rods in coils and etc.
1. What are the master alloys?
The master alloy is an alloy material used for casting with precise composition through refining, so the master alloy is also called a casting master alloy. The reason why the master alloy is called “master alloy” is because it has strong genetic properties as the base material of casting, that is to say, many characteristics of the master alloy (such as carbide distribution, grain size, microscopic mirror image structure), Even including mechanical properties and many other characteristics that affect the quality of casting products) will be inherited to castings after remelting and pouring. Existing widely used master alloy materials include high-temperature alloy master alloys, heat-resistant steel master alloys, dual-phase master alloys, and conventional stainless steel master alloys.
2. Master Alloys Application
There are lots of reasons for adding master alloys to a melt. One main application is composition adjustment, i.e. changing the composition of the liquid metal to realize the specified chemical specification. Another important application is structure control – influencing the microstructure of metal in the casting and solidification process so as to vary its properties. Such properties include mechanical strength, ductility, electrical conductivity, castability, or surface appearance. Counting on its application, a master alloy is usually also mentioned as a “hardener”, “grain refiner” or “modifier”.
Post time: Dec-02-2022